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annotate light9/Patch.py @ 826:05aabe3d7b02

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fix some minor issues with graph contexts Ignore-this: 7fd366a4b6cbd94af6f9edb1b4b4c6fc
author Drew Perttula <drewp@bigasterisk.com>
date Tue, 04 Jun 2013 20:28:49 +0000
parents 40b6a06bd090
children 71e9f35dd0e1
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1 import os
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2 from rdflib import RDF
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3 from light9.namespaces import L9
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4 from light9 import showconfig
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5
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7 def resolve_name(channelname):
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8 "Ensure that we're talking about the primary name of the light."
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9 return get_channel_name(get_dmx_channel(channelname))
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10
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11 def get_all_channels():
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12 """returns primary names for all channels (sorted)"""
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13 prinames = reverse_patch.values()[:]
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14 prinames.sort()
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15 return prinames
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16
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17 def get_dmx_channel(name):
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18 if name in patch:
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19 return patch[name]
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20
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21 try:
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22 i = int(name)
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23 return i
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24 except ValueError:
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25 raise ValueError("Invalid channel name: %r" % name)
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26
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27 def get_channel_name(dmxnum):
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28 """if you pass a name, it will get normalized"""
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29 try:
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30 return reverse_patch[dmxnum]
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31 except KeyError:
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32 return str(dmxnum)
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33
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34 def get_channel_uri(name):
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35 return uri_map[name]
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36
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37 def dmx_from_uri(uri):
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38 return uri_patch[uri]
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39
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40 def reload_data():
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41 global patch, reverse_patch, uri_map, uri_patch
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42 patch = {}
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43 reverse_patch = {}
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44 uri_map = {}
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45 uri_patch = {}
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47 graph = showconfig.getGraph()
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49 for chan in graph.subjects(RDF.type, L9['Channel']):
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50 for which, name in enumerate([graph.label(chan)] +
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51 list(graph.objects(chan, L9['altName']))):
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52 name = str(name)
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53 uri_map[name] = chan
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54
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55 if name in patch:
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56 raise ValueError("channel name %r used multiple times" % name)
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57 for output in graph.objects(chan, L9['output']):
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58 for addr in graph.objects(output, L9['dmxAddress']):
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59 addrInt = int(addr)
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60 patch[name] = addrInt
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61 uri_patch[chan] = addrInt
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62
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63 if which == 0:
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64 reverse_patch[addrInt] = name
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65 reverse_patch[addr] = name
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66 norm_name = name
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67 else:
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68 reverse_patch[name] = norm_name
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70 # importing patch will load initial data
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71 reload_data()
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72